The Battle of Jarama (6–27 February 1937) was an attempt by General Francisco Franco's Nationalists to dislodge the Republican lines along the river Jarama, just east of Madrid, during the Spanish Civil War. Elite Spanish Legionnaires and Moroccan Regulares from the Army of Africa forced back the Republican Army of the Centre, including the International Brigades, but after days of fierce fighting no breakthrough was achieved. Republican counterattacks along the captured ground likewise failed, resulting in heavy casualties to both sides. Preliminaries By winter of 1936–37 the Nationalist forces, led by General Francisco Franco, having failed to carry Madrid by storm in November 1936, resolved to cut off the city by crossing the Jarama to the south east and severing Madrid's communications with the pro tempore Republican capital of Valencia. General Emilio Mola was in overall command of the Nationalist forces around Madrid and planned an offensive across the Jarama south of the capital. General Luis Orgaz y Yoldi was put in command of the front, with General José Enrique Varela exercising command in the field. The attack had been intended to coincide with an offensive by Franco's Italian allies under General Mario Roatta at Guadalajara, but the Italians were not ready in time and Mola decided to press ahead without them. The Nationalists had roughly 25,000 infantry, mostly regulares and Spanish Foreign Legionnaires. Mola also had ten squadrons of cavalry at his disposal. They were supported by German troops from the Condor Legion, including two heavy machine gun battalions, a tank corps under Wilhelm Ritter von Thoma and batteries of 155 mm and 88 mm guns. The initial objectives of the Nationalists were to take the western bank of the river Jarama and to capture the heights that overlooked it. Next, they would break through the Republican positions on the high ground east of the river and take the towns of Vaciamadrid and Arganda in order to sever the Madrid–Valencia road and cut off the capital to the south and east. Taking the west bank After a period of heavy rain, the Nationalist offensive began on 5 February with assaults on the Republican positions on the west bank of the Jarama. The opening attacks took the Republicans by surprise. The Nationalists, as was the fashion of the Army of Africa, advanced in mobile brigade-sized columns and overwhelmed the unprepared Republicans. Colonel García Escámez commanded their right flank (to the